8690561938 has 8 divisors (see below), whose sum is σ = 13050608688. Its totient is φ = 4340359044.

The previous prime is 8690561933. The next prime is 8690561977. The reversal of 8690561938 is 8391650968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8690561933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2458756 + ... + 2462287.

It is an arithmetic number, because the mean of its divisors is an integer number (1631326086).

Almost surely, 2^8690561938 is an apocalyptic number.

8690561938 is a deficient number, since it is larger than the sum of its proper divisors (4360046750).

8690561938 is a wasteful number, since it uses less digits than its factorization.

8690561938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921928.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 8690561938 is about 93223.1834792183. The cubic root of 8690561938 is about 2055.9661169264.

The spelling of 8690561938 in words is "eight billion, six hundred ninety million, five hundred sixty-one thousand, nine hundred thirty-eight".